A family friend told PEOPLE that Carrie's daughter, Billie Lourd, wanted the memorial to feel like one of the parties the When Harry Met Sally alum used to throw, saying:

"Billie wanted the people her mother loved to gather in that living room one last time."

The insider explained that the Scream Queens alum delivered a eulogy in memory of her mother, adding that close friends Meryl Streep, Tracey Ullman, Bruce Wagner, Stephen Fry, and Gavin de Becker also said a few words:

"All the tributes circled back to Billie and how much Carrie loved her."

The confidante confessed that Meryl even performed Ms. Fisher's favorite song, Happy Days Are Here Again, describing: